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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">com.google.android.exoplayer2.source</a></div>
<h2 title="Class CompositeMediaSource" class="title">Class CompositeMediaSource&lt;T&gt;</h2>
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<li><a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">java.lang.Object</a></li>
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<li><a href="BaseMediaSource.html" title="class in com.google.android.exoplayer2.source">com.google.android.exoplayer2.source.BaseMediaSource</a></li>
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<li>com.google.android.exoplayer2.source.CompositeMediaSource&lt;T&gt;</li>
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<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - The type of the id used to identify prepared child sources.</dd>
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<dt>All Implemented Interfaces:</dt>
<dd><code><a href="MediaSource.html" title="interface in com.google.android.exoplayer2.source">MediaSource</a></code></dd>
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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="ads/AdsMediaSource.html" title="class in com.google.android.exoplayer2.source.ads">AdsMediaSource</a></code>, <code><a href="ClippingMediaSource.html" title="class in com.google.android.exoplayer2.source">ClippingMediaSource</a></code>, <code><a href="ConcatenatingMediaSource.html" title="class in com.google.android.exoplayer2.source">ConcatenatingMediaSource</a></code>, <code><a href="LoopingMediaSource.html" title="class in com.google.android.exoplayer2.source">LoopingMediaSource</a></code>, <code><a href="MaskingMediaSource.html" title="class in com.google.android.exoplayer2.source">MaskingMediaSource</a></code>, <code><a href="MergingMediaSource.html" title="class in com.google.android.exoplayer2.source">MergingMediaSource</a></code></dd>
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<pre>public abstract class <span class="typeNameLabel">CompositeMediaSource&lt;T&gt;</span>
extends <a href="BaseMediaSource.html" title="class in com.google.android.exoplayer2.source">BaseMediaSource</a></pre>
<div class="block">Composite <a href="MediaSource.html" title="interface in com.google.android.exoplayer2.source"><code>MediaSource</code></a> consisting of multiple child sources.</div>
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<h3>Nested classes/interfaces inherited from interface&nbsp;com.google.android.exoplayer2.source.<a href="MediaSource.html" title="interface in com.google.android.exoplayer2.source">MediaSource</a></h3>
<code><a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>, <a href="MediaSource.MediaSourceCaller.html" title="interface in com.google.android.exoplayer2.source">MediaSource.MediaSourceCaller</a></code></li>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier</th>
<th class="colSecond" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected </code></td>
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">CompositeMediaSource</a></span>()</code></th>
<td class="colLast">
<div class="block">Creates composite media source without child sources.</div>
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<h3>Method Summary</h3>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#disableChildSource(T)">disableChildSource</a></span>&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id)</code></th>
<td class="colLast">
<div class="block">Disables a child source.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#disableInternal()">disableInternal</a></span>()</code></th>
<td class="colLast">
<div class="block">Disables the source, see <a href="BaseMediaSource.html#disable(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller)"><code>BaseMediaSource.disable(MediaSourceCaller)</code></a>.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#enableChildSource(T)">enableChildSource</a></span>&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id)</code></th>
<td class="colLast">
<div class="block">Enables a child source.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#enableInternal()">enableInternal</a></span>()</code></th>
<td class="colLast">
<div class="block">Enables the source, see <a href="BaseMediaSource.html#enable(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller)"><code>BaseMediaSource.enable(MediaSourceCaller)</code></a>.</div>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>protected <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMediaPeriodIdForChildMediaPeriodId(T,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId)">getMediaPeriodIdForChildMediaPeriodId</a></span>&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id,
                                     <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId)</code></th>
<td class="colLast">
<div class="block">Returns the <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source"><code>MediaSource.MediaPeriodId</code></a> in the composite source corresponding to the specified <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source"><code>MediaSource.MediaPeriodId</code></a> in a child source.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>protected long</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMediaTimeForChildMediaTime(T,long)">getMediaTimeForChildMediaTime</a></span>&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id,
                             long&nbsp;mediaTimeMs)</code></th>
<td class="colLast">
<div class="block">Returns the media time in the <a href="MediaPeriod.html" title="interface in com.google.android.exoplayer2.source"><code>MediaPeriod</code></a> of the composite source corresponding to the
 specified media time in the <a href="MediaPeriod.html" title="interface in com.google.android.exoplayer2.source"><code>MediaPeriod</code></a> of the child source.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>protected int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getWindowIndexForChildWindowIndex(T,int)">getWindowIndexForChildWindowIndex</a></span>&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id,
                                 int&nbsp;windowIndex)</code></th>
<td class="colLast">
<div class="block">Returns the window index in the composite source corresponding to the specified window index in
 a child source.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#maybeThrowSourceInfoRefreshError()">maybeThrowSourceInfoRefreshError</a></span>()</code></th>
<td class="colLast">
<div class="block">Throws any pending error encountered while loading or refreshing source information.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>protected abstract void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onChildSourceInfoRefreshed(T,com.google.android.exoplayer2.source.MediaSource,com.google.android.exoplayer2.Timeline)">onChildSourceInfoRefreshed</a></span>&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id,
                          <a href="MediaSource.html" title="interface in com.google.android.exoplayer2.source">MediaSource</a>&nbsp;mediaSource,
                          <a href="../Timeline.html" title="class in com.google.android.exoplayer2">Timeline</a>&nbsp;timeline)</code></th>
<td class="colLast">
<div class="block">Called when the source info of a child source has been refreshed.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#prepareChildSource(T,com.google.android.exoplayer2.source.MediaSource)">prepareChildSource</a></span>&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id,
                  <a href="MediaSource.html" title="interface in com.google.android.exoplayer2.source">MediaSource</a>&nbsp;mediaSource)</code></th>
<td class="colLast">
<div class="block">Prepares a child source.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#prepareSourceInternal(com.google.android.exoplayer2.upstream.TransferListener)">prepareSourceInternal</a></span>&#8203;(<a href="../upstream/TransferListener.html" title="interface in com.google.android.exoplayer2.upstream">TransferListener</a>&nbsp;mediaTransferListener)</code></th>
<td class="colLast">
<div class="block">Starts source preparation and enables the source, see <a href="BaseMediaSource.html#prepareSource(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller,com.google.android.exoplayer2.upstream.TransferListener)"><code>BaseMediaSource.prepareSource(MediaSourceCaller,
 TransferListener)</code></a>.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#releaseChildSource(T)">releaseChildSource</a></span>&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id)</code></th>
<td class="colLast">
<div class="block">Releases a child source.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#releaseSourceInternal()">releaseSourceInternal</a></span>()</code></th>
<td class="colLast">
<div class="block">Releases the source, see <a href="BaseMediaSource.html#releaseSource(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller)"><code>BaseMediaSource.releaseSource(MediaSourceCaller)</code></a>.</div>
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<h3>Methods inherited from class&nbsp;com.google.android.exoplayer2.source.<a href="BaseMediaSource.html" title="class in com.google.android.exoplayer2.source">BaseMediaSource</a></h3>
<code><a href="BaseMediaSource.html#addDrmEventListener(android.os.Handler,com.google.android.exoplayer2.drm.DrmSessionEventListener)">addDrmEventListener</a>, <a href="BaseMediaSource.html#addEventListener(android.os.Handler,com.google.android.exoplayer2.source.MediaSourceEventListener)">addEventListener</a>, <a href="BaseMediaSource.html#createDrmEventDispatcher(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId)">createDrmEventDispatcher</a>, <a href="BaseMediaSource.html#createDrmEventDispatcher(com.google.android.exoplayer2.source.MediaSource.MediaPeriodId)">createDrmEventDispatcher</a>, <a href="BaseMediaSource.html#createEventDispatcher(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,long)">createEventDispatcher</a>, <a href="BaseMediaSource.html#createEventDispatcher(com.google.android.exoplayer2.source.MediaSource.MediaPeriodId)">createEventDispatcher</a>, <a href="BaseMediaSource.html#createEventDispatcher(com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,long)">createEventDispatcher</a>, <a href="BaseMediaSource.html#disable(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller)">disable</a>, <a href="BaseMediaSource.html#enable(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller)">enable</a>, <a href="BaseMediaSource.html#isEnabled()">isEnabled</a>, <a href="BaseMediaSource.html#prepareSource(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller,com.google.android.exoplayer2.upstream.TransferListener)">prepareSource</a>, <a href="BaseMediaSource.html#refreshSourceInfo(com.google.android.exoplayer2.Timeline)">refreshSourceInfo</a>, <a href="BaseMediaSource.html#releaseSource(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller)">releaseSource</a>, <a href="BaseMediaSource.html#removeDrmEventListener(com.google.android.exoplayer2.drm.DrmSessionEventListener)">removeDrmEventListener</a>, <a href="BaseMediaSource.html#removeEventListener(com.google.android.exoplayer2.source.MediaSourceEventListener)">removeEventListener</a></code></li>
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<code><a href="https://developer.android.com/reference/java/lang/Object.html#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink" target="_top">wait</a></code></li>
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<h3>Methods inherited from interface&nbsp;com.google.android.exoplayer2.source.<a href="MediaSource.html" title="interface in com.google.android.exoplayer2.source">MediaSource</a></h3>
<code><a href="MediaSource.html#createPeriod(com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.upstream.Allocator,long)">createPeriod</a>, <a href="MediaSource.html#getInitialTimeline()">getInitialTimeline</a>, <a href="MediaSource.html#getMediaItem()">getMediaItem</a>, <a href="MediaSource.html#getTag()">getTag</a>, <a href="MediaSource.html#isSingleWindow()">isSingleWindow</a>, <a href="MediaSource.html#releasePeriod(com.google.android.exoplayer2.source.MediaPeriod)">releasePeriod</a></code></li>
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<h4>CompositeMediaSource</h4>
<pre>protected&nbsp;CompositeMediaSource()</pre>
<div class="block">Creates composite media source without child sources.</div>
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<h4>prepareSourceInternal</h4>
<pre class="methodSignature">@CallSuper
protected&nbsp;void&nbsp;prepareSourceInternal&#8203;(@Nullable
                                     <a href="../upstream/TransferListener.html" title="interface in com.google.android.exoplayer2.upstream">TransferListener</a>&nbsp;mediaTransferListener)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="BaseMediaSource.html#prepareSourceInternal(com.google.android.exoplayer2.upstream.TransferListener)">BaseMediaSource</a></code></span></div>
<div class="block">Starts source preparation and enables the source, see <a href="BaseMediaSource.html#prepareSource(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller,com.google.android.exoplayer2.upstream.TransferListener)"><code>BaseMediaSource.prepareSource(MediaSourceCaller,
 TransferListener)</code></a>. This method is called at most once until the next call to <a href="BaseMediaSource.html#releaseSourceInternal()"><code>BaseMediaSource.releaseSourceInternal()</code></a>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="BaseMediaSource.html#prepareSourceInternal(com.google.android.exoplayer2.upstream.TransferListener)">prepareSourceInternal</a></code>&nbsp;in class&nbsp;<code><a href="BaseMediaSource.html" title="class in com.google.android.exoplayer2.source">BaseMediaSource</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mediaTransferListener</code> - The transfer listener which should be informed of any media data
     transfers. May be null if no listener is available. Note that this listener should usually
     be only informed of transfers related to the media loads and not of auxiliary loads for
     manifests and other data.</dd>
</dl>
</li>
</ul>
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<h4>maybeThrowSourceInfoRefreshError</h4>
<pre class="methodSignature">@CallSuper
public&nbsp;void&nbsp;maybeThrowSourceInfoRefreshError()
                                      throws <a href="https://developer.android.com/reference/java/io/IOException.html" title="class or interface in java.io" class="externalLink" target="_top">IOException</a></pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="MediaSource.html#maybeThrowSourceInfoRefreshError()">MediaSource</a></code></span></div>
<div class="block">Throws any pending error encountered while loading or refreshing source information.

 <p>Should not be called directly from application code.

 <p>Must only be called after <a href="MediaSource.html#prepareSource(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller,com.google.android.exoplayer2.upstream.TransferListener)"><code>MediaSource.prepareSource(MediaSourceCaller, TransferListener)</code></a>.</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://developer.android.com/reference/java/io/IOException.html" title="class or interface in java.io" class="externalLink" target="_top">IOException</a></code></dd>
</dl>
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<h4>enableInternal</h4>
<pre class="methodSignature">@CallSuper
protected&nbsp;void&nbsp;enableInternal()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="BaseMediaSource.html#enableInternal()">BaseMediaSource</a></code></span></div>
<div class="block">Enables the source, see <a href="BaseMediaSource.html#enable(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller)"><code>BaseMediaSource.enable(MediaSourceCaller)</code></a>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="BaseMediaSource.html#enableInternal()">enableInternal</a></code>&nbsp;in class&nbsp;<code><a href="BaseMediaSource.html" title="class in com.google.android.exoplayer2.source">BaseMediaSource</a></code></dd>
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<h4>disableInternal</h4>
<pre class="methodSignature">@CallSuper
protected&nbsp;void&nbsp;disableInternal()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="BaseMediaSource.html#disableInternal()">BaseMediaSource</a></code></span></div>
<div class="block">Disables the source, see <a href="BaseMediaSource.html#disable(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller)"><code>BaseMediaSource.disable(MediaSourceCaller)</code></a>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="BaseMediaSource.html#disableInternal()">disableInternal</a></code>&nbsp;in class&nbsp;<code><a href="BaseMediaSource.html" title="class in com.google.android.exoplayer2.source">BaseMediaSource</a></code></dd>
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<h4>releaseSourceInternal</h4>
<pre class="methodSignature">@CallSuper
protected&nbsp;void&nbsp;releaseSourceInternal()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="BaseMediaSource.html#releaseSourceInternal()">BaseMediaSource</a></code></span></div>
<div class="block">Releases the source, see <a href="BaseMediaSource.html#releaseSource(com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller)"><code>BaseMediaSource.releaseSource(MediaSourceCaller)</code></a>. This method is called
 exactly once after each call to <a href="BaseMediaSource.html#prepareSourceInternal(com.google.android.exoplayer2.upstream.TransferListener)"><code>BaseMediaSource.prepareSourceInternal(TransferListener)</code></a>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="BaseMediaSource.html#releaseSourceInternal()">releaseSourceInternal</a></code>&nbsp;in class&nbsp;<code><a href="BaseMediaSource.html" title="class in com.google.android.exoplayer2.source">BaseMediaSource</a></code></dd>
</dl>
</li>
</ul>
<a id="onChildSourceInfoRefreshed(java.lang.Object,com.google.android.exoplayer2.source.MediaSource,com.google.android.exoplayer2.Timeline)">
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</a><a id="onChildSourceInfoRefreshed(T,com.google.android.exoplayer2.source.MediaSource,com.google.android.exoplayer2.Timeline)">
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<h4>onChildSourceInfoRefreshed</h4>
<pre class="methodSignature">protected abstract&nbsp;void&nbsp;onChildSourceInfoRefreshed&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id,
                                                   <a href="MediaSource.html" title="interface in com.google.android.exoplayer2.source">MediaSource</a>&nbsp;mediaSource,
                                                   <a href="../Timeline.html" title="class in com.google.android.exoplayer2">Timeline</a>&nbsp;timeline)</pre>
<div class="block">Called when the source info of a child source has been refreshed.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>id</code> - The unique id used to prepare the child source.</dd>
<dd><code>mediaSource</code> - The child source whose source info has been refreshed.</dd>
<dd><code>timeline</code> - The timeline of the child source.</dd>
</dl>
</li>
</ul>
<a id="prepareChildSource(java.lang.Object,com.google.android.exoplayer2.source.MediaSource)">
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</a><a id="prepareChildSource(T,com.google.android.exoplayer2.source.MediaSource)">
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<h4>prepareChildSource</h4>
<pre class="methodSignature">protected final&nbsp;void&nbsp;prepareChildSource&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id,
                                        <a href="MediaSource.html" title="interface in com.google.android.exoplayer2.source">MediaSource</a>&nbsp;mediaSource)</pre>
<div class="block">Prepares a child source.

 <p><a href="#onChildSourceInfoRefreshed(T,com.google.android.exoplayer2.source.MediaSource,com.google.android.exoplayer2.Timeline)"><code>onChildSourceInfoRefreshed(Object, MediaSource, Timeline)</code></a> will be called when the
 child source updates its timeline with the same <code>id</code> passed to this method.

 <p>Any child sources that aren't explicitly released with <a href="#releaseChildSource(T)"><code>releaseChildSource(Object)</code></a>
 will be released in <a href="#releaseSourceInternal()"><code>releaseSourceInternal()</code></a>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>id</code> - A unique id to identify the child source preparation. Null is allowed as an id.</dd>
<dd><code>mediaSource</code> - The child <a href="MediaSource.html" title="interface in com.google.android.exoplayer2.source"><code>MediaSource</code></a>.</dd>
</dl>
</li>
</ul>
<a id="enableChildSource(java.lang.Object)">
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<h4>enableChildSource</h4>
<pre class="methodSignature">protected final&nbsp;void&nbsp;enableChildSource&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id)</pre>
<div class="block">Enables a child source.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>id</code> - The unique id used to prepare the child source.</dd>
</dl>
</li>
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<a id="disableChildSource(java.lang.Object)">
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<pre class="methodSignature">protected final&nbsp;void&nbsp;disableChildSource&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id)</pre>
<div class="block">Disables a child source.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>id</code> - The unique id used to prepare the child source.</dd>
</dl>
</li>
</ul>
<a id="releaseChildSource(java.lang.Object)">
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</a><a id="releaseChildSource(T)">
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<pre class="methodSignature">protected final&nbsp;void&nbsp;releaseChildSource&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id)</pre>
<div class="block">Releases a child source.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>id</code> - The unique id used to prepare the child source.</dd>
</dl>
</li>
</ul>
<a id="getWindowIndexForChildWindowIndex(java.lang.Object,int)">
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</a><a id="getWindowIndexForChildWindowIndex(T,int)">
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<h4>getWindowIndexForChildWindowIndex</h4>
<pre class="methodSignature">protected&nbsp;int&nbsp;getWindowIndexForChildWindowIndex&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id,
                                                int&nbsp;windowIndex)</pre>
<div class="block">Returns the window index in the composite source corresponding to the specified window index in
 a child source. The default implementation does not change the window index.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>id</code> - The unique id used to prepare the child source.</dd>
<dd><code>windowIndex</code> - A window index of the child source.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The corresponding window index in the composite source.</dd>
</dl>
</li>
</ul>
<a id="getMediaPeriodIdForChildMediaPeriodId(java.lang.Object,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId)">
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<h4>getMediaPeriodIdForChildMediaPeriodId</h4>
<pre class="methodSignature">@Nullable
protected&nbsp;<a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;getMediaPeriodIdForChildMediaPeriodId&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id,
                                                                          <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId)</pre>
<div class="block">Returns the <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source"><code>MediaSource.MediaPeriodId</code></a> in the composite source corresponding to the specified <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source"><code>MediaSource.MediaPeriodId</code></a> in a child source. The default implementation does not change the media period
 id.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>id</code> - The unique id used to prepare the child source.</dd>
<dd><code>mediaPeriodId</code> - A <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source"><code>MediaSource.MediaPeriodId</code></a> of the child source.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The corresponding <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source"><code>MediaSource.MediaPeriodId</code></a> in the composite source. Null if no
     corresponding media period id can be determined.</dd>
</dl>
</li>
</ul>
<a id="getMediaTimeForChildMediaTime(java.lang.Object,long)">
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</a><a id="getMediaTimeForChildMediaTime(T,long)">
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<h4>getMediaTimeForChildMediaTime</h4>
<pre class="methodSignature">protected&nbsp;long&nbsp;getMediaTimeForChildMediaTime&#8203;(<a href="CompositeMediaSource.html" title="type parameter in CompositeMediaSource">T</a>&nbsp;id,
                                             long&nbsp;mediaTimeMs)</pre>
<div class="block">Returns the media time in the <a href="MediaPeriod.html" title="interface in com.google.android.exoplayer2.source"><code>MediaPeriod</code></a> of the composite source corresponding to the
 specified media time in the <a href="MediaPeriod.html" title="interface in com.google.android.exoplayer2.source"><code>MediaPeriod</code></a> of the child source. The default implementation
 does not change the media time.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>id</code> - The unique id used to prepare the child source.</dd>
<dd><code>mediaTimeMs</code> - A media time in the <a href="MediaPeriod.html" title="interface in com.google.android.exoplayer2.source"><code>MediaPeriod</code></a> of the child source, in
     milliseconds.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The corresponding media time in the <a href="MediaPeriod.html" title="interface in com.google.android.exoplayer2.source"><code>MediaPeriod</code></a> of the composite source, in
     milliseconds.</dd>
</dl>
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